/*
 * This file is part of aion-engine <aion-engine.com>
 *
 * aion-engine is private software: you can redistribute it and or modify
 * it under the terms of the GNU Lesser Public License as published by
 * the Private Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * aion-engine is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser Public License
 * along with aion-engine.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.aionengine.gameserver.world;

import com.aionengine.gameserver.configs.main.WorldConfig;

/**
 * @author ATracer
 */
public class RegionUtil {

    public static final int X_3D_OFFSET = 1000000;
    public static final int Y_3D_OFFSET = 1000;
    public static final int X_2D_OFFSET = 1000;

    /**
     * @param regionSize
     * @param x
     * @param y
     * @return
     */
    public static final int get2DRegionId(int regionSize, float x, float y) {
        return (int) x / regionSize * X_2D_OFFSET + (int) y / regionSize;
    }

    /**
     * @param regionSize
     * @param x
     * @param y
     * @param z
     * @return
     */
    public static final int get3DRegionId(int regionSize, float x, float y, float z) {
        return (int) x / regionSize * X_3D_OFFSET + (int) y / regionSize * Y_3D_OFFSET + (int) z / regionSize;
    }

    /**
     * @param x
     * @param y
     * @return
     */
    public static final int get2dRegionId(float x, float y) {
        return get2DRegionId(WorldConfig.WORLD_REGION_SIZE, x, y);
    }

    /**
     * @param x
     * @param y
     * @param z
     * @return
     */
    public static final int get3dRegionId(float x, float y, float z) {
        return get3DRegionId(WorldConfig.WORLD_REGION_SIZE, x, y, z);
    }

    /**
     * @param regionId
     * @return
     */
    public static final int getXFrom2dRegionId(int regionId) {
        return regionId / X_2D_OFFSET * WorldConfig.WORLD_REGION_SIZE;
    }

    /**
     * @param regionId
     * @return
     */
    public static final int getYFrom2dRegionId(int regionId) {
        return regionId % X_2D_OFFSET * WorldConfig.WORLD_REGION_SIZE;
    }

    /**
     * @param regionId
     * @return
     */
    public static final int getXFrom3dRegionId(int regionId) {
        return regionId / X_3D_OFFSET * WorldConfig.WORLD_REGION_SIZE;
    }

    /**
     * @param regionId
     * @return
     */
    public static final int getYFrom3dRegionId(int regionId) {
        return regionId % X_3D_OFFSET / Y_3D_OFFSET * WorldConfig.WORLD_REGION_SIZE;
    }

    /**
     * @param regionId
     * @return
     */
    public static final int getZFrom3dRegionId(int regionId) {
        return regionId % X_3D_OFFSET % Y_3D_OFFSET * WorldConfig.WORLD_REGION_SIZE;
    }
}
